Summary
This paper analyzes the numerical solution of Fredholm integral equations of the first kindTx=y by means of finite rank and other approximation methods replacingTx=y byT N x=y N ,N=1,2, .... The operatorsT andT N can be viewed as operators from eitherL 2[a, b] toL 2[c,d] or as operators fromL ∞[a, b] toL ∞[c, d]. A complete analysis of the fully discretized problem as compared with the continuous problemTx=y is also given. The filtered least squares minimum norm solutions (LSMN) to the discrete problem and toT N x=y are compared with the LSMN solution ofTx=y. Rates of convergence are included in all cases and are in terms of the mesh spacing of the quadrature for the fully discretized problem.
Similar content being viewed by others
References
Anselone, P.M.: Collectively compact operator approximation theory. Prentice-Hall 1971
Anselone, P.M., Palmer, T.W.: Spectral analysis of collectively compact strongly convergent operator sequences. Pacific J. Math.25, 423–431 (1968)
Anselone, P.M., Lee, J.W.: Double approximation methods for the solution of Fredholm integral equations. Proceedings of a Conferrence at Oberwolfach, July, 1975
Anselone, P.M., Davis, J.: Nonlinear operator approximation. Forthcoming
Atkinson, K.E.: The numerical solution of the eigenvalue problem for compact integral operators. Trans. Amer. Math. Soc.129, 458–465 (1967)
Atkinson, K.E.: The numerical solution of Fredholm integral equations of the second kind. SIAM J. Numer. Anal.4, 337–348 (1967)
Baker, C.T.H., Fox, L., Mayers, D.F., Wright, K.: Numerical solution of Fredholm integral equations of the first kind. Comput. J.7, 141–148 (1974)
Brackhage, H.: Über die numerische Behandlung von Integralgleichungen nach Quadraturformelmethode. Numer. Math.3, 147–175 (1969).
Childers, D.S., Varga, R.S., Perry, N.W.: Composite signal decomposition. IEEE Trans. AU-18, No. 4, 471–477 (1970)
Diaz, J.B., Metcalf, E.T.: On iteration procedures for equations of the first kind. Math. Comput.24, 923–935 (1970)
Dunford, H., Schwartz, J.: Linear operators, Part II. New York: Wiley 1963
Gordon, R.: A bibliography on image reconstruction from projections. In: Proc. of Conference on Image Processing at Stanford Univ., 1975
Gordon, R., Herman, G.T.: Three dimensional reconstructions from projections. International Rev. Cytol.38, No. 111 (1974)
Graves, J., Prenter, P.M.: On generalized iterative filters for ill-conditioned problems. To appear
Hanson, R.J.: A numerical method for solving Fredholm integral equations of the first kind using singular values. SIAM J. Numer. Anal.8, 616–622 (1971)
Hanson, R.J.: Integral equations of immunology. Comm. ACM10, 883–890 (1972)
Herman, G.T., Rowland, S.W.: Three methods for reconstructing objects from x-rays: A comparative study. Comput. Graphics and Image Processing2, 151–178 (1973)
Hunt, B.R.: The inverse problem of radiography. Math. Biosci.8, 161–179 (1970)
Kammerer, W.J., Nashed, M.Z.: Iterative methods for best approximate solutions of integral equations of the first and second kinds. MRC Tech. Summary Report 1117, January 1971. J. Math. Anal. Appl.40, 547–573 (1972)
Keller, H.B.: The solution of singular and semidefinite linear systems by iteration. SIAM J. Numer. Anal.2, 281–290 (1965)
Landweber, L.: An iteration formula for Fredholm integral equations of the first kind. Amer. J. Math.73, 615–624 (1951)
MacAdam, D.P.: Digital image restoration by constrained deconvolution. J. Opt. Soc. Amer.60, 1617–1627 (1970)
Mikhlin, S.G.: The numerical performance of variational methods. Wolters-Noordhoff 1971
Nashed, M.Z.: Approximate regularized solutions to improperly posed linear integral and operator equations, pp. 289–322. In: Constructive and computational methods for differential and integral equations (D. Colton, R.G. Gilbert, ed.), Lecture Notes in Mathematics, Vol. 430. Berlin-Heidelberg-New York: Springer 1974
Nashed, M.Z.: On moment discretization and least squares solutions of linear integral equations of the first kind. J. Math. Anal. Appl.53, 359–366 (1976)
Nashed, M.Z.: Aspects of generalized inverses in analysis and regularization. In: Generalized inverses and applications, pp. 193–240, pp. 325–396. New York: Academic Press 1976
Nashed, M.Z., Rall, L.B.: Annotated bibliography on generalized inverses and applications (especially Section L). New York: Academic Press 1976
Nashed, M.Z., Wahba, G.: Generalized inverses in reproducing kernel spaces. An approach to regularization of linear operator equations. SIAM J. Math. Anal.5, 974–987 (1974)
Nystrom, E.J.: Über die praktische Auflösung von linearen Integralgleichungen mit Anwendungen auf Randwertaufgaben der Potentialtheorie. Comment. Phys.-Math. Soc. Sci. Fennica4 (1928)
Phillips, D.L.: A technique for the numerical solution of certain integral equations of the first kind. J. Assoc. Comput. Mach.9, 84–97 (1962)
Picard, E.: Sur un theoreme generale relatif aux equations integrales de premiere espaces et sur quelques problemes de physique mathematique. Rend. Circ. Mat. Palermo29, 615–629 (1910)
Prenter, P.M.: Splines and variational methods. Series pure and applied mathematics, pp. 318. New York: Wiley 1975
Prenter, P.M.: A collocation method for the numerical solution of integral equations. SIAM J. Numer. Anal.10, 571–581 (1973)
Robinson, A.L.: Image reconstruction. I. Computerized x-ray scanners. Science190, No. 542 (1975)
Robinson, A.L.: Image reconstruction. II. Computerized scanner explosion. Science150, No. 647 (1975)
Spence, A.: On the convergence of the Nystrom method for the integral equation eigenvalue problem. Numer. Math.25, 57–66 (1975)
Strand, O.N.: Theory and methods related to the singular-function expansion and Landweber iteration for integral equations of the first kind. SIAM J. Numer. Anal.11, 798–825 (1974)
Strand, O.N.: Theory and methods for operator equations of the first kind. Doctoral thesis, Colorado State University, Fort Collins, 1972
Strand, O.N.: Some aspects of the behavior of regularized solutions as the amount of smoothing is varied. Comput. Math. Appl. (to appear)
Strand, O.N., Westwater, E.R.: Minimum rms estimation of the numerical solution of a Fredholm integral equation of the first kind. SIAM J. Numer. Anal.5, 287–295 (1968)
Tikhonov, A.N.: Solution of incorrectly formulated problems and the regularization method. Soviet Math. Dokl.4, 1035–1038 (1963)
Twomey, S.: On the numerical solution of Fredholm integral equations of the first kind by the inversion of the linear system produced by quadrature. J. Assoc. Comput Mach.10, 79–101 (1963)
Twomey, S.: The application of numerical filtering to the solution of integral equations encountered in indirect sensing measurements. J. Franklin Institute279, 95–109 (1965)
Twomey, S.: The determination of aerosol size distributions from diffusional decay measurements. J. Franklin Inst.275, 121–138 (1963)
Varah, J.M.: On the numerical solution of ill-conditioned linear systems with applications to illposed problems. SIAM J. Numer. Anal.10, 257–267 (1973)
Vermuri, V., Chen, F.P.: An initial value method for solving Fredholm integral equations of the first kind. J. Franklin Inst.297, 187–200 (1974)
Wahba, G.: On the numerical solution of Fredholm integral equations of the first kind. Rep. UWIS-DS-69-217, Univ. of Wisconsin, Madison, 1969
Wahba, G.: Convergence rates of certain approximate solutions to Fredholm integral equations of the first kind. J. Approximation Theory7, 167–185 (1973)
Wahba, G.: A class of approximate solutions to linear operator equations. J. Approximation Theory9, 61–77 (1973)
Wielandt, H.: Error bounds for eigenvalues of symmetric integral equations. Proc. Sympos. Appl. Math. Vol. 6. Providence, RI: Amer. Math. Soc. 1956
Wen so lo: Spectral approximation theory for bounded linear operators. Bull. Austral. Math. Soc.8, 279–387 (1967)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lee, J.W., Prenter, P.M. An analysis of the numerical solution of Fredholm integral equations of the first kind. Numer. Math. 30, 1–23 (1978). https://doi.org/10.1007/BF01403903
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01403903